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KMID : 0903619960370050645
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Journal of the Korean Society for Horticultural Science
1996 Volume.37 No. 5 p.645 ~ p.651
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Effect of Optimal Priming Conditions on Seed Germination and Seeding Growth of Tomato
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Kang Jum-Soon
Cho Jeoung-Lai
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Abstract
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This study was carried out to determine the optimal priming conditions for tomato seeds and find priming effects in terms of germinability, emergence rate and seedling growth. Among four different chemicals, KNO₃ at 150 mM had the shortest T_(50). Seeds primed at 20℃ for 4 days germinated most rapidly at all four temperature regimes tested. When the seeds were germinated at 15℃ and 20℃, addition of H₂O₂ to 150 mM KNO₃ resulted in a shorter T_(50). Optimum concentration of H202 was 50 mM for ´Youngsoo´ and 25 mM for ´Wolkwang´. The effectiveness of priming in reducing the T5o was more evident when the seeds were germinated at 10℃ to 15℃. This result demonstrates the potential value of seed priming for enhanced germination in the field. Seed priming induced earlier emergence of two cultivars tested, Early growth of seedlings were slightly enhanced by seed priming.
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KEYWORD
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